#include <stdio.h>
#include "myadd.h"
#include "mysub.h"

int main()
{
  int a = 20, b = 10;
  printf("%d+%d=%d\n", a, b, MyAdd(a, b));
  printf("%d-%d=%d\n", a, b, MySub(a, b));
  return 0;
}
